Perhaps you should try some spelling variations:
"modified learning predation algorithm" » "modified learning predators algorithm", "modified learning estimation algorithm", "modified learning prediction algorithm", "modified learning emotion algorithm", "mobile learning predation algorithm", "modified caging predation algorithm"
"modified average approximation algorithms" » "modified coverage approximation algorithms"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified average approximation algorithms") or ("modified learning predation algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified average approximation algorithms") OR ("modified learning predation algorithm")).
• Removing quotes may allow a broader search: (( modified average approximation algorithms ) or ( modified learning predation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified average approximation algorithms") or ("modified learning predation algorithm"))*.